diff options
Diffstat (limited to 'extras/multipath')
| -rw-r--r-- | extras/multipath/main.c | 32 |
1 files changed, 29 insertions, 3 deletions
diff --git a/extras/multipath/main.c b/extras/multipath/main.c index f3f92e7eba..9bceb265ba 100644 --- a/extras/multipath/main.c +++ b/extras/multipath/main.c @@ -660,9 +660,19 @@ usage(char * progname) exit(1); } +static int +running(char * run) { + struct stat buf; + + if(!stat(run, &buf)) + return 1; + return 0; +} + int main(int argc, char *argv[]) { + char * run = "/var/run/multipath.run"; struct multipath * mp; struct path * all_paths; struct scsi_dev * all_scsi_ids; @@ -705,12 +715,26 @@ main(int argc, char *argv[]) } + if (running(run)) { + if (conf.verbose) { + fprintf(stderr, "Already running.\n"); + fprintf(stderr, "If you know what you do, please "); + fprintf(stderr, "remove %s\n", run); + } + return 1; + } + + if(!open(run, O_CREAT)) + exit(1); + /* dynamic allocations */ mp = malloc(conf.max_devs * sizeof(struct multipath)); all_paths = malloc(conf.max_devs * sizeof(struct path)); all_scsi_ids = malloc(conf.max_devs * sizeof(struct scsi_dev)); - if (mp == NULL || all_paths == NULL || all_scsi_ids == NULL) + if (mp == NULL || all_paths == NULL || all_scsi_ids == NULL) { + unlink(run); exit(1); + } if (!conf.with_sysfs) { get_all_scsi_ids(&conf, all_scsi_ids); @@ -725,11 +749,12 @@ main(int argc, char *argv[]) fprintf(stdout, "\n"); print_all_mp(all_paths, mp, nmp); fprintf(stdout, "\n"); - //printf("\n"); } - if (conf.dry_run) + if (conf.dry_run) { + unlink(run); exit(0); + } for (k=0; k<=nmp; k++) { if (map_present(mp[k].wwid)) { @@ -738,5 +763,6 @@ main(int argc, char *argv[]) add_map(&conf, all_paths, mp, k, DM_DEVICE_CREATE); } } + unlink(run); exit(0); } |